Case for a portable typewriter



FIG. 1 is a right front perspective view of a case for a portable typewriter showing my new design;

FIG. 2 is a left rear perspective view thereof;

FIG. 3 is a left side elevational view thereof; and

FIG. 4 is a bottom plan view thereof. 

The ornamental design for a case for a portable typewriter, substantially as shown and described. 